/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepCore/Public/DataprepAsset.h
Creates an action from the array of action steps or one action per action steps then add the action(s) to the Dataprep asset
The index of the last added action or index none if the action is invalid
int32 AddAction ( const [TArray](API\Runtime\Core\Containers\TArray)< const [UDataprepActionStep](API\Plugins\DataprepCore\UDataprepActionStep) * > & ActionSteps )